High-pressure automatic burner governor



W. R, RAY.

HIGH PRESSURE AUTOMATIC BURNER GOVERNOR. APPLICATION EILEDYIAN. 23,1920. RENEWED JAN. 18. 1922.

Pwtented Align 2 SHEETS-SHEET I.

m. a M

W R. RAY.

HIGH PRESSURE AUTOMATIC BURNER GOVERNOR.

APPLICATION FILED JAN. 23, 1920. Emu/E0 mu, 18,1922.

- Ir m i m X W n W M v V a m W H V M Patented Aug. 8, Iii- 22,

onrreo STATES WILLIAM RgRA Y, OF SAN FRANCISCO, CALIFORNIA.

rr'ren-rnassunn AUTOMATIC Bummn GOVERNOR.

Specification of Letters Patent. .Patentd A g 1.922

Application filed' January '23, 1920, Serial at. 353,478. RenewedJanuary 13,1922. Serial No. 530,230.'

whereby the quantity of oil delivered to theburner is regulated byvariations in steam pressure. 1 v

One of the objects of the present invention is to provide an automaticburner governor whereby the quantity of oil delivered to the burner maybe automatically regulated, and especially to provide a steam actuateddiaphragm valve and a cooperating relief valve whereby the deliveryofoil to the burner is so regulated that a small fire will be maintainedwhen a predetermined boiler pressure" is reached, and a large fireproduced when the boiler pressure is lower. ,1 Another object of theinvention is to pro vide manually actuated meansfor varying the quantityof oil delivered either when thefire is small or large thus increasingor decreasing'thesize of the fire as required. Another object ofthe'invention s to jpro Vide an automatic governor control of theespecially character described whichv is adapted to beemployedinconjunction with an oil delivering pump having a constant "delivery.

Further objects will hereinafter appear.

The. invention consists ofthe parts and the construction, combinationand arrangement of parts as hereinafter more fully described andclaimed, having reference to the accompanying drawings, in which-, Fig;1 is 'a front view of the burner show;

ing the application of the automatic gover nor.

Fig. 2 is a plane section of the diaphragm actuated valve taken on line2--2, Fig. 3.

Fig. 3 is a side elevation of the diaphrag'rn actuated valve with partsbroken away to more clearly illustrate the construction.

cates in .general an oil burner, the burner employed in the presentinstance being of'the rotary atomizing type as shownin my formerPatenflNo. 1,285,37 6, issued November. 19,

1918, and. entitled Oil burner. A burner of tliis-characterconsists of arotary atomizing Referring to the drawings in detail, A indicup which isrotated. by means of an elec trici motor B. Oil is delivered to this cupthrough a pipe 2 which extends through a hollow motor shaft. Air is alsodelivered and is in this instance supplied by means of a fan inclosedwithin ahousing 3, said fan being secured on the motor shaft androtating in unison with the atomizing cup. The I oil supplied to the cupis delivered by.,means" of'a gear pump 4:. This pump is driven from themotor shaft andis provided with an intake and an outlet connection suchas shown means ofa' pipe 7 through the outlet 6 is delivered to a jacketpassage 8 formed exterior of the motor housing. The oil after passingthrough the housing discharges at 9 into'a pipe 10 which is connectedwith a vertically disposed pipe 11. This pipe is connected with a returnpipeline 12 by meansof a pipe 13 to permit any surplus amount of oildelivered by the 'pump 4 to be returned to the tank. Theoil required bythe burner is by-passed' from the plpe 11 through a pipe 2 which isconnected with a valve 1.5,Wl110h regulates the quantity of .011delivered. Mounted on the return pipe line .12 is a pressure gauge 16, adiaphragm actuated valve C and a relief valve D. The diaphragm actuatedvalve consists of a housing 17 ,in the upper portion of which is mounteda diaphragm 18. This diaphragm 'is held on top of the casing 17 by means-.of a head member19 and a pressure chamber 2 0,is thereby formed abovethe diaphragm, the funptionof which will hereinafter be described:Connected with the head member 19 is a pipe 21,the opposite end'of whichis connected with the steam dome of the boiler as indicated by 21.Positioned below the diaphragm is a. spring-22 and adapted to regulatethe tension of said spring is an adjusting nut 23. Attached to the lowerend of the casing 17, or formed integral thereenters the chamber .27 andits flow intochamber 28with connected pipe 30 is regulated by means ofthe valve 25 and also by means of a by-pass valve 31. This valve, as

as and" 6 respectively. The intake 0011- .1 nectionis connected b i witha tank of oil or 0t er suitable source of supply, and the oildischargedby the pump may be regulated by means of a screw The valves 25 and 31therefore serve the shown in' Fig. 2, is. held against its seat'by meansof a spring 32, the tension of which construction to the valve 31inasmuch as it is held against its seat by means of aspring the tensionof which is regulated by a-screw and av hand wheel" 36. The valves and31 serve the function of automatically controlling the large fire, whilethe relief valve D serves the function of regulating-thesmall F or thepurpose ofnlearly illustrating the function ,of the valves 25 and 31,and the valve D, it should first of all be real zed that the pumpemployed has a constant delivery, that is the pump is driven directlyfrom the motor shaft and as the speed of the'motor is constant-thespeedof the pump will also be constant, henee a uniform quan- ,tity of. oilwill be travelling through the pipes. Secondly,1we will assume that it,is

desired to'maintain. a pressure of 40 pounds when a large 'fire isrequired, and that pres;

sure of 15 pounds willbe required when the boiler is operating under a;small fire. Furthen that the diaphragm valve G. is so adjusted that itwill not opeii theuvalve25 un- 35ytil-a steam pressure of,18() pounds isobtained. Whenv the'burner is operating under a large fire and thepressure in the boiler gradually increases Until '18() pounds is at-;

tained, it should beobvi ous that the pressure. in the chamber 20exerted upon the diaphragm 18 will be suflicientto overcome the 'tensionof the spring 22. The diaphragin 18 will under this condition yieldasufficient distance to permit the valve; 25 to open,the returning oilwill thus find a .free escape through the valve casing-24 and k the onlyresistance imposed upon the free return of the oil to the tank will'bethe relief valve D. This is,-however, regulated so that a back pressureof 15 pounds will be maintained on the return line andthe.sur-v plus oilwill therefore be maintained under a pressure of 15 pounds, saidpressure being that required for a small fire. The dia phragm valve25will remain open as long as the steam pressure in the boiler remains at180 pounds. It will, however, close the moment the boiler pressure dropsand the pressure in the return line 12 will then immediately build up to.40 pounds as valve 25 is closed and the only escape possible forthereturning oil will thereforebe through the valve controlled passage 31."lhis is, however, set for 40 pounds pressure and the oil on the returnline will therefore build up until pounds pressure is obtained as itcannotescapej the by-pass valve 31 llIllJll;

this "pressure is obtained. The size ofthe fire Will therefore increaseas the pressure ,builds up and the maximum size fire is obtained when.the pressure of 40 pounds is reached The large fire will continueuntilthe maximum boiler pressure is again reached and the cycle of "operationwill thus justment bein provided for the purpose of .varyin the size ofthe large fire, If it is desire to increase the size, of the small fire,it "will only. be necessary to increase the tension of the spring in therelief valve D so that the back pressure obtained will be greater than15 pounds, and if it is desired to decrease the size of the small fire a,re verse adjustmentisresorted to.

From the foregoing description it can be seen that I have provided meansfor automatically maintaining a large or small fire. Secondly, thatmanual means are provided for increasing or decreasing the size ofeither the large fire or the: small fire, or

both. This is of considerable importance as thesteam generating capacityof a boiler may-thus be varied for the loadre'quired or asothe"r*-conditions may I demand.

WVhile the automatic. burner-control is here shown asemployedinconjunction with .a burner of the rotarl atomizing type, it is obviousthat any ot ier suitable form of I burner may be employed. r Similarlyvarying changes may be made within thescope of the appended claims,without" departing from the spirit of-the present invention.

Having thus described my invention, what I claim and desire to secure byLetters Patcut isl" 1, The combination with an oil burner and a pump fordelivering oil thereto, of an oil delivery andreturnplpe line connectedwith the pump and the burner, a valve on the return line adapted to openor closethe- How of oil therethrough and a by-pass valve cooperatingtherewith for maintaining a back pressure on the return line when thevalve is deliveryand return pipe lineconnected with the pump and theburner, a valve on the re turn line adapted to open or close the flow ofoil therethrough," a by-pass valve -cooperating therewith'formaintaining a back pressure on the return line when the valve is closed,and meansfor adjusting the bypass valve to vary the back pressure.

"3. The combination with an oil burner and,

turn line. adapted to open. or close the flow.

of oil therethrough, a by-pass valve coopera ting therewith formaintaining aback pressure on the return line when the valve is closed,and pressure actuated means, for opening or closing the first namedvalve.

4. The combination with anoi-l burner and a pump for deliveringoilthereto, of an oil delivery and return pipe line connected with ing'therewith for maintaining a back pres-L sure on the return line when thevalve is the pump and the burner, a valve on the re-,

turn line adapted to opener close the flow ofoil therethrough, a by-passvalve cooperat:

closed, pressure. actuated mea-nsfor opening? or closing the first namedvalve, and means for adjusting -the by-pass valve to vary the pressure.a I

5. The combination with an oil burner and a pump for delivering oilthereto, of an oil delivery and return pipe line connected with the pumpand the burner, a valve on the re turn line adapted to open or close theflowj' of oil therethrough,'a by-pass valve cooperating therewith formaintaining a back pressureon the return line when the valve is closed,and afrelief valve'on the-returnline adapted to produce a backpressureon the return valve. v

6 The combination with an oil burner and a pump fol-delivering oilthereto, or an oil delivery and return p1pe line connected with the pumpand the burner, a valve on the return line adapted to open enclose theflow of oil therethrough, a by-pass valve cooperating therewith formaintaining a back pressure on the return line when the'val ve isclosed, a relief valve on the return line adapted to produce a backpressure on the return line independent of the by-pass valve, and meansfor regulating the relief-valve to increase [or decrease the backpressure producedthereby.

7. The combinationwith a boiler and an oil burner cooperating therewith,of a pump adapted to ,deliver oil to the burner; a return pipe lineconnectedwith the burner, a valve on said line adapted to open orclose'the' flow of oil through the return' line, a diaphragm;-

actuated by steam pressure in the boiler adapted to open or close thevalve, adjustable means engageable with thediaphra m for regulating themovement thereof, and a by-pass valve connected with the pressureactuated valve adapted to create a back pressure on the return lineindependent of-the pressure actuated valve. 5

8. The combination with a oil burner cooperating therewith,-of a pumpadapted to deliver oil to the burner, a return back pressure-on-thereturn line independent vated valve.

justing the position of theiby-pas's 'valv line independent of theby-pass boiler and" an flow of oil through the'return line, a diaphragmactuated by steam pressure in the boiler adapted to open or close thevalve, adjustable means engageable with the' dia- I phragm' forregulating the movement thereof, a by-pass valve cooperating with thepressure actuated'valve-adapted to create a of the pressure actuatedfvalve and means for adjusting the position of .the by-pass valve tovary-the back pressure on there turn line: independent of the pressureactuso 9. The combination witha boiler and an oil burner cooperatingtherewith, of a pum adaptedto deliver oiljto-the burner, a return pipeline'connected with" the burner, a valve on said line'- adapted to d'penor close the flow of oil through'the returnline, a diaphragm'l actuatedby steamjpressure in the boiler adapted to open or close thevalva l- Iadjustable means engageable with the dial: phragm. for regulating themovement ther of, a Joy-pass valve"cooperating'jwith pressure actuatedvalve adapted to create .back pressure on the return lineindependent 1 Iof the pressure actuated valve, means for vary the back pressure 'on'the returrrvline m dependent of the pressure"; actuated valve" and areliefxvalve on the pipe line-JadaPted,

to create a back; pressure onthe ,ret'urnline independent of the by-passvalve. and the pressure actuatedvalve. R

10. The combination with a boiler a d al; j oil burner cooperating.therewith, of a ump adapted todeliver oil to the burner, aretu'rn f pipeline connected with the lmrn'er,- a valve on said line'adapted to; openor close the flow of oil through the retu'rnlline; a diaphragm actuatedby steam pressure inth'e boiler adapted to open or close the valve,

adjustablemeans engage'abl'e with, the diaphragm for regulatingzthemovement there- -of, a-by-pass valve cooperatingwith the pressureactuated valve adapted to create a backpressure on the return lineindependent of the pressure actuated valve, means for adjusting theposition of'the bypass valve to vary theback pressure on. the return,line independent of the pressure actuated valve, a relief valve on thepipe line adapted .to v 'createa back pressure. on the return lineindependent of the, by-pas s"valve and the pressure actuated valve, andmeans for regulat.

ing the position of the relief valve to increase or decrease said backpressure.

11. The combination with a boiler and an i oil burner cooperatingtherewith," of an oil pump adapted to deliver oil to theburner,

return line connected with the pump and the burner, meahs on-the returnline for producing a constant back pressure when a.srnall' 1 .9.

fire is required, and means actuated by the steam pressure in the boilerfor producing a back pressure on the return line in excess of the firstnamed means to produce a large fire under the boiler. y

12. The combination with a boiler and an oil burner cooperatingtherewith, of an oilpump adapted to deliver oil to the burner,

a return line connected with the pump and the burner, a relief valve onthe return line adapted to maintain a constant back pressure thereon,and a diaphragm actuated valve on the return line adapted to produce anincreased back pressure when the pressure in the boiler is below apredetermined pressure 13. The combination with a boiler and an oilburner cooperating therewith, of an-oil pump adapted to deliver oil tothe burner, a

return line connected with the pump and the burner, a relief valve onthe return line adapted toimaint a'in a'con'stant back:v pres surethereon, and a diaphragm actuated valve 30 In testimony'whereof I havehereunto set my\hand inthe'presenee of'two subscribing.

witnesses, v

Witnesses:

Jomq H. HERRING, W. W. 'HEALY.

. WILLIAM R; RAY.

